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92 Commits

Author SHA1 Message Date
Rhys Perry
d4b211bf1b ac/nir: always round cube array layers 
It seems this is still necessary if conformant_trunc_coord=true.

Fixes various dEQP-VK.texture.shadow.cube_array.* and
dEQP-VK.glsl.texture_functions.texture*samplercubearray* failures with
conformant_trunc_coord.

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Cc: 23.2 <mesa-stable>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24137>
 2023-07-17 12:17:22 +00:00
Timur Kristóf
5825e20dbf ac/nir: Add new pass to lower intrinsics to shader args. 
This is beneficial for intrinsics that do an algebraic
instruction such as bitfield extract on shader arguments,
because it allows NIR to be aware of these instructions and
optimize them together with other algebraic instructions in
the shader.

Currently, just handle subgroup_id and num_subgroups intrinsics.
More will be added here in the future.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24005>
 2023-07-14 12:17:24 +00:00
Yonggang Luo
19196199a8 ac: Replace the usage of pipe_compare_func with compare_func 
PIPE_FUNC_ -> COMPARE_FUNC_
pipe_compare_func -> compare_func

Now include "pipe/p_state.h" is not needed and remove it in ac_nir.h

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23422>
 2023-06-11 06:27:05 +00:00
Daniel Schürmann
03c4b5b0cc nir,amd: add nir_intrinsic_store_[scalar|vector]_arg_amd to overwrite inputs 
This intrinsic must only be used at top-level CF in order
to not break SSA properties.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22096>
 2023-06-08 00:37:03 +00:00
Chia-I Wu
0bba0eb0df ac, radeonsi: add and use ac_get_ps_iter_mask 
It is more natural for ac_get_ps_iter_mask to take sample count.
Replace samplemask_log_ps_iter by ps_iter_smples in
ac_nir_lower_ps_options accordingly.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23265>
 2023-05-30 16:35:30 +00:00
Marek Olšák
038fb6573a radeonsi: remove the gl_SampleMask FS output if MSAA is disabled 
It's better to remove the output than what the previous code did,
which only unset MASK_EXPORT_ENABLE.

Reviewed-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23216>
 2023-05-26 23:27:59 -04:00
Rhys Perry
0d26d9d9b6 ac/nir: add fix_derivs_in_divergent_cf 
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22636>
 2023-05-25 16:29:16 +00:00
Rhys Perry
3efaaf130a ac/nir: round layer in ac_nir_lower_tex 
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22636>
 2023-05-25 16:29:16 +00:00
Rhys Perry
1f86be7f8e ac/nir: add pass for lowering 1d/cube coordinates 
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22636>
 2023-05-25 16:29:16 +00:00
Marek Olšák
e18344dd24 ac,radeonsi,winsyses: switch to SPDX-License-Identifier: MIT 
excluding: aco, radv, addrlib

Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Acked-by: David Heidelberg <david.heidelberg@collabora.com>
Acked-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23113>
 2023-05-24 21:48:19 +00:00
Qiang Yu
471418077a ac/nir/ps: add no_color_export option 
For radv which always do ps lower but may use epilog or not.

Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22199>
 2023-04-26 03:27:26 +00:00
Qiang Yu
c877d26454 ac/nir/ps: use nir_export_dual_src_blend_amd when aco 
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22199>
 2023-04-26 03:27:26 +00:00
Qiang Yu
35d5c7c251 ac/nir/ps: lower sample mask input when needed 
Ported from si_llvm_build_ps_prolog().

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21683>
 2023-04-17 02:11:56 +00:00
Qiang Yu
1103d4ed74 ac/nir/ps: add force lower barycentric load options 
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21683>
 2023-04-17 02:11:55 +00:00
Qiang Yu
0e4ac0c1d6 ac/nir/ps: lower barycentric load when bc_optimize 
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21683>
 2023-04-17 02:11:55 +00:00
Marek Olšák
eaf98b1422 ac/nir: implement image opcode emulation for CDNA, enable it in radeonsi 
Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22158>
 2023-04-06 15:00:53 +00:00
Qiang Yu
003d84b660 ac/nir: add ac_nir_load_arg_at_offset 
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22045>
 2023-04-03 01:35:06 +00:00
Timur Kristóf
93e4382438 radv, ac/nir: Move sin/cos lowering to a common pass. 
Also ran clang-format on the affected code.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21971>
 2023-03-30 05:59:13 +00:00
Timur Kristóf
b0cae2fafe ac/nir: Remove ac_nir_apply_first_task_to_task_shader. 
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22139>
 2023-03-29 15:08:55 +00:00
Qiang Yu
c182154456 ac/nir: add ac_nir_lower_ps 
Lower ps output to nir_export_amd.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21552>
 2023-03-28 19:57:11 +00:00
Marek Olšák
6eddc6dd5a ac/nir: use plural correctly in the ac_nir_export_parameters name 
Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Reviewed-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21920>
 2023-03-17 23:58:28 +00:00
Qiang Yu
e070a9e8d0 ac/nir: move store_var_components to common place 
It will be shared by other nir lowering too.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21437>
 2023-03-16 04:33:30 +00:00
Marek Olšák
09005e6dfc ac/nir: add ac_nir_lower_subdword_loads to lower 8/16-bit loads to 32 bits 
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19399>
 2023-03-03 03:27:40 +00:00
Qiang Yu
aea109e25d ac/nir/ngg,radv: ms use ac_nir_export_(primitive|position|parameter) 
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20691>
 2023-02-03 12:27:44 +00:00
Qiang Yu
80506be31b ac/nir/ngg,radv,radeonsi: nogs use ac_nir_export_(position|parameter) 
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20691>
 2023-02-03 12:27:44 +00:00
Qiang Yu
7c41cdb81f ac/nir,radv,radeonsi: gs copy shader use ac_nir_export_(position|parameter) 
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20691>
 2023-02-03 12:27:44 +00:00
Qiang Yu
7308637bb4 ac/nir,radv,radeonsi: legacy vs use ac_nir_export_(position|parameter) 
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20691>
 2023-02-03 12:27:44 +00:00
Qiang Yu
58988c3239 ac/nir: add force_vrs to ac_nir_export_position 
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20691>
 2023-02-03 12:27:43 +00:00
Qiang Yu
daa12b1ab1 ac/nir: add ac_nir_export_parameter 
For last VGT stage to export parameter outputs.

Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20691>
 2023-02-03 12:27:43 +00:00
Qiang Yu
f823581dd4 ac/nir: add ac_nir_export_position 
Used by last VGT stage to export position related outputs.

Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20691>
 2023-02-03 12:27:43 +00:00
Qiang Yu
e9268b2c06 ac/nir: gs and nogs use ac_nir_export_primitive 
Mesh shader primitive export is left unchanged because it needs
extra changes for per primitive output export when export
primitive.

Mesh shader will use second channel of primitive export.

Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20691>
 2023-02-03 12:27:43 +00:00
Qiang Yu
5fe4dd3d68 ac/llvm: implement nir_export_amd 
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20691>
 2023-02-03 12:27:43 +00:00
Qiang Yu
d045b33599 ac/nir: handle 16bit varying streamout for legacy vs and gs copy shader 
This is for VARYING_SLOT_VARx_16BIT slots varying streamout.

OpenGL ES will store 16bit medium precision varying to these slots.
Vulkan is not allowed to streamout varying less than 32bit.

Acked-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20157>
 2023-01-05 01:12:06 +00:00
Qiang Yu
7d6d63c94a ac/nir,radv: use ac_nir_gs_output_info 
We are also going to add more fields in it.

Acked-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20157>
 2023-01-05 01:12:06 +00:00
Qiang Yu
d2ac1b18df ac/nir: add ac_nir_lower_legacy_gs 
For legacy (non-NGG) GS to lower outputs to memory stores and add
shader query when required.

Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20158>
 2022-12-13 11:43:53 +08:00
Qiang Yu
0e52a4faf0 ac/nir: move ngg_gs_shader_query to a common function 
To be shared by NGG GS and legacy GS. Legacy GS need this when
GFX10 which mix use NGG and legacy GS. For example when streamout
is enabled, it uses legacy GS, otherwise uses NGG GS. So legacy
GS also need to update query emulation which is a sum of NGG and
legacy GS results.

Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20158>
 2022-12-13 11:43:49 +08:00
Qiang Yu
e9f08d8193 ac/nir: add ac_nir_unpack_arg 
Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18010>
 2022-12-02 07:34:31 +00:00
Qiang Yu
3507cdc59c ac/nir: legacy vs/gs use nir_xfb_info to replace pipe_stream_output_info 
pipe_stream_output_info is built from nir_xfb_info, why not just use
nir_xfb_info directly.

Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20015>
 2022-11-29 03:28:42 +00:00
Samuel Pitoiset
505290dc44 ac/nir,radv: rework and fix NGG queries enables for VS/TES 
XFB queries need to be enabled with NGG streamout and VS/TES.
Previously, the NGG lowering code relied on has_prim_query for XFB.

This fixes failures with RADV_PERFTEST=ngg_streamout on GFX10.3 with
the vkd3d-proton testsuite. Vulkan CTS is missing TES tests with XFB
queries apparently.

Cc: 22.3 mesa-stable
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19493>
 2022-11-07 14:54:53 +00:00
Rhys Perry
140cefe95a ac/nir: lower gfx11 vertex parameter exports 
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19228>
 2022-10-31 14:33:43 +00:00
Rhys Perry
93fb84237f ac/nir: add ac_nir_lower_ngg_options 
These signatures were getting ridiculous.

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19340>
 2022-10-27 13:31:40 +00:00
Qiang Yu
e536d0fe4b ac/nir/ngg,radv: move LDS layout calculation out of nir ngg lowering 
Use lds base load intrinsics in nir ngg lowering to get layout, left
its calulation to driver.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18832>
 2022-10-27 07:35:01 +00:00
Qiang Yu
54eea0e393 ac/nir/ngg: pass primitive_id_location as param for nogs lower 
radeonsi need to use packed driver location for all outputs,
while radv need to use VARYING_SLOT_*. To meet both drivers'
needs.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18832>
 2022-10-27 07:35:01 +00:00
Rhys Perry
1c005e72f4 ac/nir: add legacy streamout and GS copy shader helpers 
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19302>
 2022-10-25 17:35:08 +00:00
Qiang Yu
188a7f9226 ac/nir/ngg: add query param to ac_nir_lower_ngg_gs 
radeonsi may disable it. gfx_level will also be used by latter
vertex param export when gfx11.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17457>
 2022-10-25 12:58:43 +00:00
Qiang Yu
97e1613b0e ac/nir/ngg: use nir_load_provoking_vtx_in_prim_amd in ngg lower 
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19166>
 2022-10-20 06:53:56 +00:00
Qiang Yu
074f3216f2 ac/nir/ngg: support gs streamout 
Port from radeonsi.

Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17654>
 2022-09-16 08:51:28 +00:00
Qiang Yu
5ec79f9899 ac/nir/ngg: nogs support streamout 
Port from radeonsi.

Works on both GFX11 and GFX10. Although GFX10 can do atomic
GDS add on all threads, now we just disable the NGG streamout
for GFX10, so it's OK.

There's a difference for the GFX11 implementation with radeonsi
that we do all 4 buffer/stream info calc on a single thread.
It's just because this is simple, we need to update GDS on a
single thread anyway, and streamout is not that performance
critical to loss a small amount of instruction. We may change
to a better implementation when using register based streamout.

When streamout enabled, ES threads need to save all vertex
attributes to LDS besides position. This is because we don't
know where in the streamout buffer to export the attributes to
and wheter there are space in the streamout buffer.

Streamout is done in primitives, so we need to check if there
is space and where the current primitive should be written to
by GDS atomic add, then in GS threads do the streamout.

Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17654>
 2022-09-16 08:51:28 +00:00
Qiang Yu
f75452918b ac/nir/ngg: support clipdist culling 
Port from radeonsi.

Besides vertex position based primitive culling, clipdist
attribute can also be used to cull a primitive. Normally
it's used by fixed-pipeline, but when NGG we can treate it
as a culling condition to filter out invisible primitive
before fixed-pipeline.

There are two kinds of clipdist:
1. user define a clip plane explicitly by glClipPlane(),
   fixed-pipeline calculate with vertex position to get
   clipdist, then cull. This is the legacy way.
2. Now GLSL define gl_ClipDistance/gl_CullDiatance so that
   user can calculate clipdist in any way he like.

This implementation support both way.

Acked-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17651>
 2022-08-26 05:50:30 +00:00
Qiang Yu
1bdeb961bd ac/nir/ngg: add gs culling 
Port from radeonsi.

Cull primitive after GS thread and before final vertex/primitive
export. GS culling is like VS/TES culling which read out saved
vertex positions of a primitive from LDS then call the primitive
culling algorithm to check whether it's visiable or not, only
passed primitives will be exported.

Unlike the VS/TES culling that read vertex index of a primitive
from VGPRs as shader args, GS will set a primitive complete flag
for each last vertex of a primitive in LDS, so that vertex thread
know the previous 1/2/3 vertex can form a primitive and do primitive
culling.

Acked-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17651>
 2022-08-26 05:50:30 +00:00